I spent a couple hours tonight tuning my car. ill try and get a before/after graph together but here is the after graph as of now. im running 10 psi with dsm fuel injectors at 60 psi fuel pressure. i might richen it up a tad when the temp get warmer, but for now it feels great!

 

your transitions look kinda weird how the afr jumps around itll get richer then leaner. you have a 11.4 afr at 5752 then at 6488 it goes to 11.8 then back to 11.4 then up to 11.6. I think it needs a little smoothing. Whats the timing like

 

sweet pics man, can you take a few more screen shots for us.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quicksilver1689 &raquo;</TD></TR><TR><TD CLASS="quote">your transitions look kinda weird how the afr jumps around itll get richer then leaner. you have a 11.4 afr at 5752 then at 6488 it goes to 11.8 then back to 11.4 then up to 11.6. I think it needs a little smoothing. Whats the timing like</TD></TR></TABLE>


um...... no! that tune looks pretty good..... fuel wise. a jump in the a/f like he has is not gonna make a night and day difference. good job

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted k20 &raquo;</TD></TR><TR><TD CLASS="quote">


good job </TD></TR></TABLE>

yea, awsome picture

 

looks good man

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quicksilver1689 &raquo;</TD></TR><TR><TD CLASS="quote">your transitions look kinda weird how the afr jumps around itll get richer then leaner. you have a 11.4 afr at 5752 then at 6488 it goes to 11.8 then back to 11.4 then up to 11.6. I think it needs a little smoothing. Whats the timing like</TD></TR></TABLE>
Call me dumb, but I don't think it should matter if it fluctuates that much unless he's getting some high voltage readings from his knock sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quicksilver1689 &raquo;</TD></TR><TR><TD CLASS="quote">your transitions look kinda weird how the afr jumps around itll get richer then leaner. you have a 11.4 afr at 5752 then at 6488 it goes to 11.8 then back to 11.4 then up to 11.6. I think it needs a little smoothing. Whats the timing like</TD></TR></TABLE>

Looks pretty damn good to me. It doesn't have to be 100% stable to the 10th of a point throughout the rpm range. Its gonna fluctuate some anyway.

 

thanks guys. i cant get it any more perfect than it is. if i did another pull with the same tune the numbers there would flucuate at least +-2/10 of a unit. i can plot my timing i guess. ill do that later

 

Looks good. That amount of fluxuation isn't going to bother anything. It's all safe.


Hows your timming look?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quicksilver1689 &raquo;</TD></TR><TR><TD CLASS="quote">your transitions look kinda weird how the afr jumps around itll get richer then leaner. you have a 11.4 afr at 5752 then at 6488 it goes to 11.8 then back to 11.4 then up to 11.6. I think it needs a little smoothing. Whats the timing like</TD></TR></TABLE>
wtf looks good to me

 

thats stable to me. Good afr's too , Its always going to fluctuate slightly...man as long as ur in between 11.4 and 11.9 range ur good...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by the.hamburglar &raquo;</TD></TR><TR><TD CLASS="quote"> i might richen it up a tad when the temp get warmer, but for now it feels great!

</TD></TR></TABLE>

doesnt your program have compensation for iat and ect? if not warmer temps would make the car run richer anyways so if anything you would have to take some fuel out. but i wouldnt touch anything unless the wideband tells you to. good work

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by the.hamburglar &raquo;</TD></TR><TR><TD CLASS="quote">thanks guys. i cant get it any more perfect than it is. if i did another pull with the same tune the numbers there would flucuate at least +-2/10 of a unit. i can plot my timing i guess. ill do that later
</TD></TR></TABLE>

What they don't tell you is they usually 'smooth' it with the dyno software to make it look nice.

BTW I think you have too much software running in the background (notification area)...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by the.hamburglar &raquo;</TD></TR><TR><TD CLASS="quote">i might richen it up a tad when the temp get warmer, but for now it feels great!</TD></TR></TABLE>

Hot air is less dense than cold air.

 

You better stop buy and take me for a rip!!!

I wanna experience 10psi of terror!!!

Lookin good on the afr tho!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a &raquo;</TD></TR><TR><TD CLASS="quote">

Hot air is less dense than cold air.</TD></TR></TABLE>

Hot air contains more thermal load than cold air.


Looks like a good job setting your AFRs, homeslice. A little plug reading mojo and some dyno time and you'll have professional-level results.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Joseph Davis &raquo;</TD></TR><TR><TD CLASS="quote">

Hot air contains more thermal load than cold air.
</TD></TR></TABLE>

Hot air is in your head

 

Very Nice. Its not often you see DIY'ers taking time to make it right like that. Good job.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHCD16y8 &raquo;</TD></TR><TR><TD CLASS="quote">Very Nice. Its not often you see DIY'ers taking time to make it right like that. Good job.</TD></TR></TABLE>

thanks, here i made up a theoretical dyno graph using the kinetic energy equation, Ke=1/2(M*V^2). then converted Ke into hp, i guess it would be whp... here is the link i found to the university of winnipeg when i googled the conversion.

http://theory.uwinnipeg.ca/mod_tech/node30.html

this looks kinda weird but i whipped it up pretty fast. im going to spend more time on it here in the next few days.

 

you gotta love excel for that. Yeah for your math and worksheet skills...and common sense that most people lack.

How'd you learn to street tune? Did you read any books? Also what system are you using for fuel/timing? Too many questions I know

 

He is using crome, and he is a genious, (engineer by trade) and he tought himself by research!!! on honda-tech - or zenocron - or pgmfi, or w/e, hes to damn smart tho!!!

Sory to thread jack Adam, nice graph by the way...

 

excel is the greatest program in recorded history.

i did the same deal. i was tuning with Turboedit which has no 3d map viewing functions, i graphed it in excel so i could see what the hell was going on. nice job.

do you know off hand what fuel pressures DSMs run - i guess i should be asking the highest level of efficient fuel pressure for those injectors.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bch5428 &raquo;</TD></TR><TR><TD CLASS="quote">excel is the greatest program in recorded history.

i did the same deal. i was tuning with Turboedit which has no 3d map viewing functions, i graphed it in excel so i could see what the hell was going on. nice job.

do you know off hand what fuel pressures DSMs run - i guess i should be asking the highest level of efficient fuel pressure for those injectors.</TD></TR></TABLE>

ya i have no idea what dsm's run for fuel pressure. i tried to search on here a few days ago but nobody came up with an answer. i run 60psi. others run up to 65psi

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by grand champ &raquo;</TD></TR><TR><TD CLASS="quote">He is using crome, and he is a genious, (engineer by trade) and he tought himself by research!!! on honda-tech - or zenocron - or pgmfi, or w/e, hes to damn smart tho!!!

Sory to thread jack Adam, nice graph by the way...</TD></TR></TABLE>

haha, i didnt think of it myself...jared and i played around with it last year with the help of the dude who started FREELOG. im still using the kinetic energy equation, but going abouts a different way converting energy to hp. jared made 154 theroretical whp 2 days before he went to the dyno and then made 156 on the mustang at performance plus. that pretty good for a stock gsr motor in a civic hatchback. i was impressed. keep in mind there is always going to be some error because of wheel size. he was using 17" rims at the time!